A prototype of Apple’s first portable Macintosh has just been posted for sale on eBay. The device is said to have not been intended for sale and is clearly marked as a prototype unit with a label stating “this device is a demonstration unit only. Production units will comply with all applicable Federal Rules and Regulations.” The device itself is in “perfect condition” but does not power on. By perfect the seller means the outside as the inside contains a defunct acid battery.

The Macintosh Portable is the basis for the laptop computers we use today. It ran on a rechargeable battery , included a screen which flipped shut and had an input device. In the case of the Macintosh Portable is was a trackball. More photos of the protoype device are at eBay.